I spent a month at Kasom's place and LOVED it! The location is close to two BTS stations, the room on the 3rd floor is absolutely immaculate and living above the best coffee shop in Bangkok is what sets this location apart from the others I looked at.
I would definitely stay here again. Everything about the stay was perfect. The hot water was HOT, the A/C was cold and the blackout curtains kept the room perfectly dark for a good night's sleep. The bed was very comfortable too!